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Dermatomyositis, Gottron's papule
Dermatomyositis, Gottron's papule


Dermatomyositis, Gottron's papules on the hand
Dermatomyositis, Gottron's papules on the hand


Dermatomyositis, heliotrope eyelids
Dermatomyositis, heliotrope eyelids


Dermatomyositis on the legs
Dermatomyositis on the legs


Dermatomyositis, Gottron's papule
Dermatomyositis, Gottron's papule


Paronychia, candidial
Paronychia, candidial


Dermatomyositis, heliotrope rash on the face
Dermatomyositis, heliotrope rash on the face


Definition:

Dermatomyositis is a muscle disease characterized by inflammation and a skin rash. It is a type of inflammatory myopathy.



Causes, incidence, and risk factors:

The cause of dermatomyositis is unknown. Experts think it may be due to a viral infection of the muscles or a problem with the body's immune system.

Anyone can develop dermatomyositis, but it most commonly occurs in children age 5 - 15 and adults age 40 - 60. Women develop this condition more often than men do.

Polymyositis is a similar condition, but the symptoms occur without a skin rash.



Symptoms:

The muscle weakness may appear suddenly or develop slowly over weeks or months. You may have difficulty raising your arms over your head, rising from a sitting position, and climbing stairs.

The rash may appear over the face, knuckles, neck, shoulders, upper chest, and back.



Signs and tests:

The doctor will perform a physical exam. Tests may include:



Treatment:

The disease is treated with anti-inflammatory medicines called corticosteroids and drugs that suppress the immune system.

When your muscle strength gets better, your doctor may tell you to slowly cut back on your doses. However, most people with this condition must take a medicine called prednisone indefinitely.

If the condition is associated with a tumor , the muscle weakness and rash may improve when the tumor is removed.



Support Groups:



Expectations (prognosis):

Some people may recover and have symptoms completely disappear. Doctors have reported several such cases, especially in children.

In adults, death may result from severe and prolonged muscle weakness, malnutrition, pneumonia , or lung failure. The major causes of death are cancer (malignancy) and lung disease.



Calling your health care provider:

Call for an appointment with your health care provider if you have muscle weakness or other symptoms of this condition.



Prevention:



References:

Goldman L, Ausiello D. Goldman: Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders; 2007.




Review Date: 2/5/2009
Reviewed By: Jonathan Kantor, MD, North Florida Dermatology Associates, Jacksonville, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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